> I only ever see high-resolution epaper matrices, but in principle I think you should be able to have much simpler epaper segment displays and so on, just like

> I only ever see high-resolution epaper matrices, but in principle I think you should be able to have much simpler epaper segment displays and so on, just like for lcds. Is there some reason this is not a thing? This is a thing. At home I have a couple Xiaomi "LYWSD02MMC" clocks that use e-paper segment displays. They also broadcast temperature and humidity over BLE and last a bit more than a year on two coin cells, and look (to me) much nicer than the Agora clock, they are much slimmer (about half a centimeter deep and with a smaller bezel). They are proprietary and very much closed though (although you can control them without proprietary apps, at least). Edit a few similar devices can run an alternative, open firmware and here's info on the eink segment display of one of them if you're curious: https://github.com/znanev/MHO-C401 https://github.com/znanev/MHO-C401